Coordinated silicon elastomer coating@fabrics with oil/water separation capabilities, outstanding durability and ultra-fast room-temperature self-healing ability

Coating@fabrics with self-healing hydrophobic properties for oil/water separation have attracted significant attention. However, currently used self-healing coating@fabrics only enable the recovery of surface properties of the coating on fabrics. If the coating gets seriously damaged from the interi...

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Veröffentlicht in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2018, Vol.6 (35), p.17156-17163
Hauptverfasser: Huang, Yawen, Shan, Yuxing, Liang, Shuai, Zhao, Xiuli, Jiang, Gang, Hu, Chengyao, Yang, Junxiao, Liu, Lili
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Sprache:eng
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Zusammenfassung:Coating@fabrics with self-healing hydrophobic properties for oil/water separation have attracted significant attention. However, currently used self-healing coating@fabrics only enable the recovery of surface properties of the coating on fabrics. If the coating gets seriously damaged from the interior ( i.e. , torn apart), the recovery of the oil/water separation performance becomes difficult. In this study, a novel strategy to achieve a self-healing ability based on coating materials with reversible dynamic bonds was proposed. To develop this idea, a self-healing silicon elastomer cross-linked via cobalt (Co)-based coordination was coated on polyethylene terephthalate (PET) fabrics. The as-modified fabrics exhibited hydrophobic properties with a contact angle (CA) of >140°, a high oil/water separation factor of around 99%, high durability (even at extremely low temperatures), and an ultra-fast self-healing ability at room temperature. After being immersed in liquid nitrogen and damaged under beating, the modified fabrics still exhibited fast self-healing properties (healing time was just 10 min) and a high oil/water separation efficiency of above 98%. Thus, this study proposes a novel design concept for the fabrication of coating@fabrics with outstanding self-healing efficiency to recover oil/water separation performance at room temperature, and may pave a way for the development of an efficient family of self-healing fabrics. A co-coordinated PDMS@PET fabric exhibited high oil/water separation performance and rapid self-healing at room temperature.
ISSN:2050-7488
2050-7496
2050-7496
DOI:10.1039/c8ta02893a